Sekaran, Uma. Research methods for business a skillbuilding approach international edition not for sale in north america, edition : 4 / Uma Sekaran. - 4th Edition ed. - [S.l.] : John Wiley_&_Sons Inc, 2002. - 464 p. ; 25 cm. Import. ISBN: 0471384488 (hardcover) 9780471384489 (hardcover) Dewey Class. No.: 650